Today is the feast of St. Augustine of Hippo, Doctor of the Church. From his Tractates on the Gospel of John (Tractate 56):
...The Lord says, The Truth declares that even he who has been washed has need still to wash his feet. What, my brethren, what think you of it, save that in holy baptism a man has all of him washed, not all save his feet, but every whit; and yet, while thereafter living in this human state, he cannot fail to tread on the ground with his feet. And thus our human feelings themselves, which are inseparable from our mortal life on earth, are like feet wherewith we are brought into sensible contact with human affairs; and are so in such a way, that if we say we have no sin, we deceive ourselves, and the truth is not in us. And every day, therefore, is He who intercedes for us, washing our feet: and that we, too have daily need to be washing our feet, that is ordering aright the path of our spiritual footsteps, we acknowledge even in the Lord's prayer, when we say, Forgive us our debts as we also forgive our debtors. For if, as it is written, we confess our sins, then verily is He, who washed His disciples' feet, faithful and just to forgive us our sins, and to cleanse us from all unrighteousness, that is, even to our feet wherewith we walk on the earth.
Accordingly the Church, which Christ cleanses with the washing of water in the word, is without spot and wrinkle, not only in the case of those who are taken away immediately after the washing of regeneration from the contagious influence of this life, and tread not the earth so as to make necessary the washing of their feet, but in those also who have experienced such mercy from the Lord as to be enabled to quit this present life even with feet that have been washed. But although the Church be also clean in respect of those who tarry on earth, because they live righteously; yet have they need to be washing their feet, because they assuredly are not without sin....
